Aqueous polymer composition

• Main Authors: Skidmore, Melissa, Such, Christopher Henry, Evans, Richard Alexander, Kemppinen, Kimmo Petteri, Peake, Simon John, Davey, Timothy Warren, Locock, Katherine Elizabeth Sarah
• Format: Patent
• Language: English
• Published: 20.06.2019
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

The present invention relates to a storage stable crosslinkable aqueous polymer composition comprising: (a) an aqueous liquid; (b) a copolymer solubilised in the aqueous liquid by a fugitive non-gas acid, the copolymer comprising polymerised residues of: (i) ethylenically unsaturated monomer comprising a basic functional group that is protonated by the fugitive non-gas acid, the polymerised residues of that monomer being present in an amount of less than 25 mol%, relative to the total number of mols of polymerised monomer residues of the copolymer; (ii) ethylenically unsaturated monomer comprising a functional group for promoting crosslinking of the copolymer; and (iii) hydrophobic ethylenically unsaturated monomer; and (c) (i) a reversibly blocked crosslinking agent for promoting crosslinking of the copolymer, and (ii) a fugitive crosslinking inhibitor for inhibiting crosslinking of the copolymer by the reversibly blocked crosslinking agent.